I have 18K rounds through mine, no issues. Love it. Having said that, here are a few parts that may break through usage: the O ring, the link, the piston, and the piston seal (although the last two now come connected together, and I have had no failures). There is a parts kit that sells for $85 that contains all of the above. The nice thing about the gun is that you can easily replace almost every part yourself if one does break.
Last edited by charlie in md; May 1, 2013 at 02:44 PM.